Systems and methods for manipulating control of sump pumps to extend lifespans of sump pumps

ABSTRACT

Example systems and methods for manipulating control of sump pumps in order to extend lifespans of the sump pumps are disclosed. An example method includes activating a sump pump a first time; deactivating the sump pump when a first current water level in a sump basin in which the sump pump is disposed reaches a first low-water mark; and determining, by one or more processors, a time since a last activation of the sump pump wherein the last activation occurred when the sump pump activated the first time. When the time satisfies a threshold, the method activates the sump pump at second time, determines, by one or more processors, a second current water level in the sump basin, and in response to determining that the second current water level in the sump basin is below a second low-water mark corresponding to a bottom of an impeller of the sump pump, deactivates the sump pump.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application of and claims the benefit of U.S. application Ser. No. 17/245,694, filed Apr. 30, 2021, entitled “SYSTEMS AND METHODS FOR MANIPULATING CONTROL OF SUMP PUMPS TO EXTEND LIFESPANS OF SUMP PUMPS,” which claims priority to (i) U.S. Provisional Application Ser. No. 63/148,783, filed Feb. 12, 2021, entitled “DETECTING AND UTILIZING A RISE RATE FOR SUMP PUMP SYSTEM CONTROL,” (ii) U.S. Provisional Application Ser. No. 63/148,880, filed Feb. 12, 2021, entitled “DETECTING AND UTILIZING WATER VIBRATIONS IN SUMP PUMP SYSTEM CONTROL,” (iii) U.S. Provisional Application Ser. No. 63/148,885, filed Feb. 12, 2021, entitled “DETECTING AND UTILIZING VIBRATION PATTERNS OF SUMP PUMPS,” (iv) U.S. Provisional Application Ser. No. 63/148,894, filed Feb. 12, 2021, entitled “ADAPTIVE LEARNING SYSTEM FOR IMPROVING SUMP PUMP CONTROL,” (v) U.S. Provisional Application Ser. No. 63/148,909, filed Feb. 12, 2021, entitled “DETERMINING AND UTILIZING A DESIRED FREQUENCY FOR A MECHANICAL SHAKER FOR A SUMP PUMP SYSTEM,” (vi) U.S. Provisional Application Ser. No. 63/148,923, filed Feb. 12, 2021, entitled “SYSTEMS AND METHODS FOR MANIPULATING CONTROL OF SUMP PUMPS TO EXTEND LIFESPANS OF SUMP PUMPS,” and (vii) U.S. Provisional Application Ser. No. 63/148,926, filed Feb. 12, 2021, entitled “SUMP PUMP SMART HOME INTEGRATION,” the entire disclosures of which are expressly incorporated herein by reference.

TECHNICAL FIELD

The present application relates generally to sump pumps and, more particularly, to systems and methods for manipulating control of sump pumps in order to extend lifespans of the sump pumps.

BACKGROUND

A sump pump is a type of pump used to remove water that has accumulated at a ground level or below ground level (e.g., a basement, a ground floor level, a sub-ground floor level, etc.) of a property (e.g., a home, an office, or any other building or structure). The sump pump sends the water into pipes that lead away from the property so that potential property flooding may be avoided. As such, failures in the sump pump can have disastrous consequences including water damages and insurance losses. However, sump pump failures often occur without prior warning or may not be discovered until significant damage has already been done. Unfortunately, many currently available sump pump systems are not designed or equipped to automatically detect impending sump pump failures, or remedy such failures even if they are detected. Accordingly, there is a need for systems and methods for maintaining sump pumps.

SUMMARY

In an embodiment, a method for maintaining a sump pump by reducing exposure of an impeller of the sump pump to standing water in a sump basin includes activating a sump pump a first time; deactivating the sump pump when a first current water level in a sump basin in which the sump pump is disposed reaches a first low-water mark; and determining, by one or more processors, a time since a last activation of the sump pump, wherein the last activation occurred when the sump pump activated the first time. When the time satisfies a threshold, the method activates, by one or more processors, the sump pump a second time to reduce exposure of an impeller of the sump pump to standing water in the sump basin, determines, by one or more processors, a second current water level in the sump basin, and in response to determining that the second current water level in the sump basin is below a second low-water mark corresponding to a bottom of the impeller, deactivates, by one or more processors, the sump pump, wherein the second low-water mark is below the first low-water mark.

In another embodiment, a non-transitory, computer-readable storage medium stores computer-readable instructions that, when executed by one or more processors of a sump pump system, cause the sump pump system to activate a sump pump a first time, deactivate the sump pump when a first current water level in a sump basin in which the sump pump is disposed reaches a first low-water mark, and determine a time since a last activation of the sump pump, wherein the last activation occurred when the sump pump activated the first time. When the time satisfies a threshold, the sump pump system activates the sump pump a second time to reduce exposure of an impeller of the sump pump to standing water in the sump basin, detects, with a sensor, a second current water level in the sump basin, and in response to detecting that the second current water level in the sump basin is below a second low-water mark corresponding to a bottom of the impeller, deactivates the sump pump, wherein the second low-water mark is below the first low-water mark.

In yet another embodiment, a method includes determining, by one or more processors, a water event; and when the water event is ended activating, by one or more processors, the sump pump to reduce exposure of an impeller of the sump pump to standing water in the sump basin, detecting, with a sensor, a current water level in a sump basin in which the sump pump is disposed, and in response to determining that the current water level in the sump basin is below a level corresponding to a bottom of the impeller, deactivating, by one or more processors, the sump pump.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an example sump pump system constructed in accordance with disclosed embodiments, and shown in an example sump pump network system.

FIG. 2 is a block diagram of an example computing system to implement the various user interfaces, methods, functions, etc., for maintaining and detecting failures of sump pumps, in accordance with disclosed embodiments.

FIG. 3 is a flowchart representative of example methods, hardware logic or machine-readable instructions for implementing the example sump pump controllers of FIGS. 1 and 2 , in accordance with disclosed embodiments.

FIG. 4 is a flowchart representative of other example methods, hardware logic or machine-readable instructions for implementing the example sump pump controllers of FIGS. 1 and 2 , in accordance with disclosed embodiments.

The figures depict embodiments of this disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following discussion that alternate embodiments of the structures and methods illustrated herein may be employed without departing from the principles set forth herein.

In general, the same reference numbers will be used throughout the drawing(s) and accompanying written description to refer to the same or like parts. The figures are not to scale. Connecting lines or connectors shown in the various figures presented are intended to represent example functional relationships and/or physical or logical couplings between the various elements. The figures are not to scale.

DETAILED DESCRIPTION

Generally speaking, disclosed systems automatically detect potentially problematic conditions and manipulate control of sump pumps in response to detecting these conditions, thereby extending the lifespan of the sump pumps and resolving potentially impending failures. Sump pumps are used in areas where lower level (e.g., ground level or below ground level) flooding may be a problem and/or is a recurring problem. A typical sump pump system comprises a submersible impeller type pump disposed in a sump basin. The sump basin is a holding cavity formed by digging a recess into the floor of a lower level of a property, such as a ground level or below ground level (e.g., a basement) of a property (e.g., a home, an office, or any other building or structure). The sump basin acts both to house the sump pump and to collect accumulated water. Water may accumulate in the sump basin when excessive amounts of rain, snow melt or ground water saturate the soil adjacent to the property and/or property lower level floor. Water may also enter the sump basin via drainage or inlet pipes that have been placed into the ground to divert any excess water into the sump basin before the water can begin to permeate foundation walls, floors, etc., or water may enter the sump basin through porous or cracked walls, floors, etc. Generally speaking, the sump basin is installed in a basement such that the top of the sump basin is lower than the lowest floor level in the basement. Accordingly, when the water table underneath and around the property rises, water flows into the sump basin to then be pumped away from the area, thereby avoiding the water table rising above the basement floor (which can result in leaks and flooding due to the typically porous nature of basement walls). In any event, after the sump pump basin fills and the water reaches a high-water mark, the sump pumping action of a sump pump removes the accumulated water in the sump basin via one or more outlet or discharge pipes that carries the pumped water to an area away from the property (such as into a municipal storm drain, a dry well, a water retention area, etc.), thereby avoiding potential flooding inside the building. Ideally, the sump basin fills and empties at a rate fast enough to prevent the water table from rising above the basement floor.

A sump basin might experience, for an extended length of time, water sitting at a level below the typical low-level mark at which the sump pump activates. In scenarios in which this low-level mark is above the impeller (which is typical—it is generally desirable for the impeller to be fully submerged before activation), water sitting at this level for an extended period of time can result in the impeller being at least partially submerged for a long period of time. This long period of submersion can lead to rust, corrosion, and other issues with the impeller, shortening the lifespan of the impeller (and potentially the whole sump pump). By implementing the described techniques, such conditions can be detected. In response to detecting such a condition, a sump pump control system may trigger the sump pump after the condition is active for a period of time, thereby avoiding corrosion problems and helping maintain pump health. In some instances, the sump pump control system may activate the sump pump at regular or semi-regular intervals. In any case, a sensor in the sump basin may detect disturbance of the water (e.g., splashing around, level dropping) to confirm that the sump pump has actually been activated. If the sensor indicates the water level has not changed, it could be indicative of a fault (e.g., a blocked discharge pipe, a stuck impeller, a burnt out motor) or it could be indicative of the water level having dropped below the impeller level. In any event, as a general matter, running the sump pump at a minimum of a few times a year can help maintain motor health. Said another way, letting a sump pump sit for a year or more at a time without activation may not be good for sump pump health. Accordingly, running the motor after an extended period of water sitting the basin may help maintain sump pump health.

In another example, after a storm has ended and water flow into the pump has slowed, it may be desirable to trigger the pump in order to remove water that might otherwise sit in the pump for a while. This might help avoid the long-standing low water level mentioned above.

Reference will now be made in detail to non-limiting examples, some of which are illustrated in the accompanying drawings.

FIG. 1 illustrates an example sump pump system 100 that can be used to remove water accumulated in a lower level of a property 150 (e.g., a home, an office, or any other building or structure). As shown in FIG. 1 , the sump pump system 100 may be part of an example sump pump network system 160.

The example sump pump system 100 includes a sump pump 102 located in a sump basin 104. The sump pump 102 and a sump pump motor 103 are enclosed in a housing 105. The sump pump motor 103 may also be referred to herein as the motor 103, and the sump pump 102 may also be referred to herein as the pump 102. While the sump pump 102 in FIG. 1 is shown as a submersible type sump pump (e.g., where the motor 103 and the sump pump 102 are mounted inside the basin 104), the sump pump 102, in general, may be any type of sump pump, such as a pedestal type sump pump that is mounted above or outside of the basin 104. As shown in FIG. 1 , the sump basin 104 is a well-like cavity or hole formed through a floor 106 of the property 150. The example sump pump system 100 also includes a water inlet pipe 108 terminating at the sump basin 104, and a discharge pipe 112 (also referred to herein as an outlet pipe) connected to the sump pump 102 to carry water out of the sump basin 104. An impeller 117 of the sump pump 102 draws in water through an inlet 118, and pumps the water up the discharge pipe 112 to an outlet 110. In the illustrated example, the discharge pipe 112 extends upward from the sump pump 102 and then out of the building. However, other arrangements may be used. The discharge pipe 112 is outfitted with a check valve 114. The check valve 114 allows water to flow up through the discharge pipe 112, but does not allow the water in the discharge pipe 112 to flow back into the sump basin 104 when the sump pump 102 is off. A weep hole 116 in the discharge pipe 112 allows excess air to escape from the pipe, preventing air binding, also known as air locking. The opening of the sump basin 104 may be protected by a cover to prevent objects from falling into the basin, and to keep noxious gases (e.g., radon) from entering the property 150. In the case of a sealed sump pump basin 104, an air vent 120 may be needed to relieve excess air pressure in the basin.

Generally, the sump pump 102 may be electrically powered and hardwired into the electrical system of the property 150. Additionally and/or alternatively, the sump pump 102 may be powered by a battery or other independent power source (not shown for clarity of illustration). The operation of the sump pump 102 is controlled by a pump activation switch 122 in response to a water level in the basin 104. For example, the sump activation switch 122 may activate the sump pump 102 when a water level in the sump basin 104 reaches a preset level. The preset level is determined by the placement of the sump pump activation switch 122. In illustrated example of FIG. 1 , the sump pump activation switch 122 is shown in the form of a float switch, although other technologies such as liquid level sensors may also be used.

As shown in FIG. 1 , the sump pump activation switch 122 is connected to the motor 103 of the sump pump 102. In some embodiments, the sump pump activation switch 122 is a level sensor, such as a float switch. When the rising water in the basin 104 lifts a float of the sump pump activation switch 122 to a high water level or mark 142, the float rises a rod, which activates and/or energizes the motor 103 to begin pumping water. In other embodiments, the sump pump activation switch 122 may be a mercury tilt switch. The rising water in the basin 104 lifts and tilts a float of the sump pump activation switch 122 and, when the float reaches the high water level or mark 142, a sufficient tilt causes a small amount of liquid mercury to slide towards open electrodes to close an electrical circuit, which activates and/or energizes the motor 103. As water is pumped out of the sump basin 104, the water level drops to a low or initial water level or mark 140. The falling water level carries the sump pump activation switch 122 back to an initial or low water level or mark 140, at which the sump pump activation switch 122 is deactivated. Thus, the motor 103 de-energizes or shuts off at the initial or low water level or mark 140.

When the sump pump 102 and/or the motor 103 fails, flooding may ensue as water fills up the sump basin 104 and overflows above the floor level 106 of the property 150. The amount of water that overflows can vary from a few inches to several feet, which may result in substantial water damage to the structures of property 150, as well as personal belongings. Accordingly, the ability to maintain sump pumps, and to detect and resolve impending sump pump failures before they occur is of great importance to the property owners and the building and property insuring parties.

The sump pump 102 may fail because of a failure in the motor 103, which renders the entire sump pump 102 inoperable. The failure in the motor 103 may be caused by various factors such as age, fatigue, overheating, poor maintenance, etc. Aside from the failure of the motor 103, the sump pump 102 may fail because of other soft mechanical failures of the components of the sump pump system 100. For example, sediment or debris build-up may cause the motor impeller 117 and/or another sump pump component to stall, thus, rendering the sump pump 102 unable to pump water even though the motor 103 is operational. Additionally or alternatively, the sump pump activation switch 122 may fail to engage in response to the rising water level and subsequently fail to actuate the motor 103. Additionally or alternatively, the check valve 114 may malfunction, and back flow of the discharged water into the sump pump basin 104 may equal or exceed the amount of water being pumped out by the sump pump 102. Additionally or alternatively, there might be a blockage in the discharge pipe 112, preventing water flow to the outlet 110. Additionally and/or alternatively, an air pocket may cause the sump pump 102 to run dry. As such, mechanisms to maintain the sump pump and/or detect impending sump pump failures may include monitoring for the occurrence of such failures.

Generally, soft mechanical failures may be identified or detected indirectly. In an embodiment, soft mechanical failures may be detected by using properly placed sensors, such as sensors 124, 126, 128, 130, 132, and 134 of FIG. 1 , able to detect issues associated with failures of the sump pump system 100. The sensors 124, 126, 128, 130, 132, and 134 may be configured to communicate with a sump pump controller 138, which may be configured to communicate with other components of the sump pump system 100, or components of a sump pump network system 160, described below. The sump pump controller 138 may also be referred to in this specification as the controller 138. The controller 138 is configured to receive and analyze data from the sensors 124, 126, 128, 130, 132, and 134 using built-in computing capabilities or in cooperation with other computing devices of the sump pump network system 160 to identify specific failures of the sump pump system 100, and in some instances remediate the issues, and/or generate an alert regarding the detected failures. Interactions between the sensors 124, 126, 128, 130, 132, and 134, the controller 138, and the components of the system 160 are discussed below in more detail.

Example remedies to soft mechanical failures (such as a blockage or stuck impeller) may include activating a shaker, altering a speed of a pump impeller, reversing a direction of spin of the pump impeller, gradually accelerating the impeller, or alternating gradual accelerations of the impeller with gradual decelerations. If desired, the sump pump system 100 may include a variable speed motor or controller for the sump pump 102. In an embodiment, the sump pump motor 103 is a variable speed motor; in an embodiment, it is not. Similarly, in an embodiment, the sump pump controller 138 is a variable speed controller; in an embodiment, it is not.

For example, in embodiments in which the pump impeller is reversed or adjusted in speed, a variable speed motor or controller may be included for controlling the pump and/or pump impeller in such a manner. In some embodiments, a variable speed motor or controller may detect a blocked impeller by sensing that the position of the rotor or impeller is not changing even though power is applied. To dislodge the mechanical blockage, the controller may spin the motor in reverse direction or alternate gradual acceleration with gradual deceleration in opposite directions. Gradual acceleration upon motor activation and gradual deceleration upon motor disengagement may reduce initial step level force impact of the pump turning on or off, which may benefit the system by lengthening the serviceable life of the motor and the marginal pipe infrastructure.

As shown in FIG. 1 , the sump pump system 100 may include a variety of mechanical, electrical, optical, or any other suitable sensors 124, 126, 128, 130, 132, and 134 disposed within, at, throughout, embedded within, or in mechanical connection to the sump basin 104, the sump pump housing 105, the inlet pipe 108, or the discharge pipe 112. Additionally, the sensors 124, 126, 128, 130, 132, and 134 may be disposed on, at, or within the motor 103, the sump pump 102, or any other components of the sump pump system 100. The one or more sensors 124, 126, 128, 130, 132, and 134 may transduce one or more of: light, sound, acceleration, translational or rotational movement, strain, pressure, presence of liquid, or other suitable signals into electrical signals. The sensors 124, 126, 128, 130, 132, and 134 may be acoustic, photonic, micro-electro-mechanical systems (MEMS) sensors, or any other suitable type of sensor.

The sensor 124 may be a water level sensor, placed a short distance (e.g., 10, 20, 30, or 50 mm above) above the high water level or mark 142 in the sump basin 104. In operation, if the water level sensor 124 does not detect water, then the water level in the basin 104 is deemed adequate. In other words, the sump pump 102 is either working properly to constantly pump water out of the basin 104, or the water level is not yet high enough to activate the sump pump 102. In any event, it can be assumed that the sump pump 102 is not experiencing any soft mechanical failure. On the other hand, if the water level sensor 124 detects water, then water may be on the rise in the basin 104, and may overflow the sump basin 104. In other words, a dangerous level of water is present in the sump basin 104, which may be due to either a failure of the sump pump 102, a failure to activate the sump pump 102, and/or a soft mechanical failure that has rendered the sump pump 102 unable to pump out adequate amount of water.

The sensor 124 may include magnetic or mechanical floats, pressure sensors, optical, ultrasonic, radar, capacitance, electroconductive and/or electrostatic sensors. The sensor 124 may be a continuous or a point level switch. A continuous liquid level switch or sensor provides a continuous feedback showing liquid level within a specified range. A point level switch detects whether a liquid level is above or below a certain sensing point. In embodiments, the sensor 124 may be a reed switch, or a mercury switch, a conductive level sensor, and/or any type of a suitable switch that changes a state from inactive to active as liquid level reaches a certain level relative to the switch position.

In some embodiments, the sensor 124 may be a continuous liquid level switch providing a measurement of the height of the water level inside the sump basin 104. The controller 138 can use these measurements, taken at time intervals (e.g., at 1, 5, or 10 second intervals), to estimate the volume of water being pumped, deposited, or backflowing in the sump basin 104. For example, knowing the sump pump basin 104 dimensions, such as a diameter (if the basin is a cylinder), or the bottom diameter, a top diameter, and a height (if the basin is a graduated cylinder) or width and length measurements (if the basin is a rectangular prism), and water level height over time will yield a measurement of water volume increase or decrease over time. The controller 138 may utilize any suitable volume formula to calculate changes in volume (e.g., volume=πr²h for a cylinder). For example, if the basin 104 is a cylinder basin, the controller 138 may be programmed to assume a known radius (e.g., 8 inches). The controller 138 may identify the distance from the bottom of the basin 104 to the water level (e.g., based on a water level sensor). This distance may be used for the “h” variable in the volume formula, enabling the controller 138 to calculate volume at any given time it can detect the “height” of the water level. In some instances, the controller 138 may be configured to account for displacement that occurs due to the pump itself being submerged within water. For example, a known volume of the pump (which is generally static) may be subtracted from a formula that assumes a perfect cylinder.

Additionally, knowing the sump basin 104 capacity (e.g., in gallons) and water volume increase over time, the controller 138 may calculate an estimate of when the sump pump basin may overflow. For example, in a sump basin with a capacity of 26 gallons and an initial water volume of 0 gallons, the controller 128 may calculate that a water volume increase at 0.1 gallons per second would result in a sump basin overflow in 260 seconds or 4 minutes and 20 seconds. The sump pump controller 138 may generate an alert, communicating an approximated time of the critical event of the sump basin 104 overflowing, or communicating the time (e.g., in minutes or seconds) remaining until the estimated overflow.

Additionally, functions of the sump pump controller 138 of FIG. 1 may be used together with the water level sensor 124 to detect certain soft mechanical failures, such as when the sump motor 103 becomes stuck and runs indefinitely. This may be due to a mechanical malfunction of the sump pump activation switch 122 or another activation element. In this scenario, when the water level sensor 124 does not detect water, the sump pump controller 138 may analyze the electrical load waveform of the motor 103 to determine how long the motor 103 is running. In general, if the sump pump 102 is working properly, then the motor 103 will automatically shut off when the falling water carries the sump pump activation switch 122 back to the initial or low level or mark 140. However, if the sump pump activation switch 122 jams or otherwise fails, then the sump motor 103 may become stuck and continue to run for a long time. Thus, if the water level sensor 124 is not detecting water but the sump pump controller 138 is detecting a long period of run time on the part of the sump motor 103 (e.g., if the run time of the sump motor 103 exceeds a certain length of time), then the sump pump 102 may be deemed to be experiencing a soft mechanical failure.

The sensor 126 may be a force sensor or transducer, configured to detect a water rise or fall rate in the sump basin 104, or water disturbance (e.g., splashing) in the sump basin 104. The sensor 126 may be, for example a piezoelectric crystal, a pneumatic, a hydraulic, an inductive, a capacitive, a magnetostrictive, or a strain gage load cell, or an accelerometer, or any other suitable sensor capable of transducing a force into an electrical signal. In an embodiment, an accelerometer of the sensor 126 measures inertial acceleration, from which water rise rate in the sump basin 104 can be determined.

The sensor 126 may be placed above the initial or low water level or mark 140 and, for example, below the high water level or mark 142 in the sump basin 104. Alternatively, the sensor 126 may be placed above the high water level or mark 142 in the sump basin 104.

In operation, a rising water level in the sump basin 104 would exert a load on the sensor 126, from which a rise or fall rate of the water level in the sump basin 104 can be determined. If the sensor 126 does not detect any force exerted on it, there may be no water at the level of the sensor 126. Alternatively, the water level at the sensor 126 in the sump basin 104 may be constant. In other words, water rise rate, or inflow rate may equal the rate of water pumped out through the discharge pipe 112 by the sump pump 102. In an alternative scenario, the sensor 126 may sense an upward force of the rising water level when the sump pump 102 is operational, and an inlet sensor 130 (described later in more detail) detects water entering the sump basin 104 from the inlet 108, indicating that the inflow rate is greater than the rate of water pumped out through the discharge pipe 112 by the sump pump 102. In yet another scenario, the sensor 126 may sense rising water, the inlet sensor 130 may not detect any water inflow into the sump basin 104, and at the same time the sump pump 102 may be engaged, the scenario indicating that the water level is rising due to additional inflow (e.g., back flow from the discharge pipe, or the vent 120, or through the floor 106 opening of an uncovered sump basin).

The sump pump system 100 may include a vibration sensor 128, placed in direct or indirect contact with the sump pump 102 or pump motor 103. FIG. 1 shows the vibration sensor 128 located on the sump pump housing 105. In some embodiments, the vibration sensor 128 may be placed on the motor 103, the sump pump 102, the discharge pipe 112, or on any component within the sump basin 104. The vibration sensor 128 may be a ceramic piezoelectric sensor, or any suitable sensor capable of detecting vibration or acceleration of motion of a structure. In operation, by measuring the inertial vibration, the vibration sensor 128 monitors the condition, predicts or monitors wear, fatigue, and failure of the sump pump system 100 components, for example sump pump 102, the motor 103, the housing 105, or the discharge pipe 112 and their respective constituents by measuring their vibrational signatures and, thus, determining the kinetic energy and forces acting upon the components. The inertial vibration signatures, when compared to a standard or when monitored for changes over time, may predict wear, impending failures, and immediate failures, such as a loose bearing, a stuck motor 103, an overloaded motor 103, a dry motor 103, a damaged discharge pipe 112, a faulty check valve 114, a broken hermetic seal of the housing 105, a stuck impeller 117, debris on the impeller 117 or inside the sump pump 102, etc.

The inlet sensor 130 and the outlet sensor 132 of the sump pump system 100 may be water level sensors, analogous to the water level sensor 124. In operation, the sensor 130 detects presence of water in the inlet pipe 108, or inflow. If the sensor 130 does not detect water in the inlet pipe 108, there is no water flowing into the sump basin 104 via the inlet pipe 108. FIG. 1 shows the sensor 130 placed on the surface of the inlet pipe 108. In some embodiments, the sensor 130 may be embedded within the water inlet pipe 108, or placed at the junction of the inlet pipe 108 and the wall of the sump basin 104. In some embodiments, the sensor 130 may include a hinged flap or a hinged lid (not shown) covering the opening of the inlet pipe 108. When the pressure of the inflowing water lifts the flap, the displacement of the flap triggers a signal that water is flowing into the sump basin 104 via the inlet pipe 108. The flap displacement may be registered, for example, in the hinge mechanism (e.g., by breaking or establishing an electrical connection by the movement of the hinge parts), or as a disconnected electrical or a magnetic connection between the flap and the inlet pipe 108 or the wall of the sump basin 104. Alternatively, the sensor 130 may be a sensor configured to detect deflection of the flap (e.g., with a laser-based or an acoustic technology).

The outlet sensor 132 detects presence of water in the discharge pipe 112 before the check valve 114, monitoring whether the check valve 114 is working properly, i.e., preventing the back flow of water into the sump basin 104 when the motor 103 is disengaged and the sump pump 102 is not operating. FIG. 1 shows the sensor 132 placed inside the discharge pipe 112 before, or closer to the sump pump 102 than the check valve 114. In operation, if the sensor 132 does not detect water when the sump pump 102 is deactivated, then the check valve 114 may be assumed to be functioning properly.

The sensor 134 may be a water level sensor, placed at a level or mark 136 in the sump basin 104 corresponding to the bottom 137 of the impeller 117 and/or another sump pump component of the sump pump 102, which is below the low or initial water level or mark 140. In operation, if the sensor 134 does not detect water, then the current water level in the basin 104 may be deemed adequately low to avoid, prevent, reduce, etc. corrosion of the impeller 117 and/or another sump pump component due to standing water in the sump basin 104. On the other hand, if the water level sensor 134 detects water, then at least a portion of the impeller 117 and/or another sump pump component may be currently exposed to water and a condition for potential corrosion may exist. Alternatively, the sensor 134 may be a force sensor or transducer and configured to detect a water rise or fall rate, water movement (e.g., a disturbance, splashing, sloshing, ripples, etc.) in the sump basin 104 due to the sump pump 102 running, etc. at the level or mark 136.

The sensor 134 may include magnetic or mechanical floats, pressure sensors, optical, ultrasonic, radar, capacitance, electroconductive or electrostatic sensors. The sensor 134 may be a continuous or a point level switch. A continuous liquid level switch or sensor provides a continuous feedback showing liquid level within a specified range. A point level switch detects whether a liquid level is above or below a certain sensing point. In some embodiments, the sensor 134 may be a reed switch, or a mercury switch, a conductive level sensor, or any type of a suitable switch that changes a state from inactive to active as liquid level reaches a certain level relative to the switch position.

Each of the sensors 124, 126, 128, 130, 132, and 134 may include one or more associated circuits, as well as packaging elements. The sensors 124, 126, 128, 130, 132, and 134 may be electrically or communicatively connected with each other (e.g., via one or more busses or links, power lines, etc.), and may cooperate to enable “smart” functionality described within this disclosure.

The sump pump system 100 may include a mechanical shaker 101 that is physically attached to the sump pump 102 and/or the discharge pipe 112. When engaged, the shaker 101 vibrates at a given frequency for the purpose of transferring motion to the sump pump 102 or the discharge pipe 112 in order to cause the pump 102 or the discharge pipe 112 to vibrate in a manner sufficient to “break loose” a blockage that is blocking the impeller 117 or the pipe 112. The mechanical shaker 101 may be in the form of an electromechanical vibration device (e.g. a linear motor) that physically agitates or shakes the sump pump. The intensity and duration of the vibration produced by the mechanical shaker 101 may be set or adjusted as desired. For example, the mechanical shaker 101 may be set to vibrate intensely and continuously for a short burst of time. As another example, the mechanical shaker 101 may be set to vibrate in multiple operating cycles (e.g., 3 or 5 cycles), with each cycle producing a different level of vibration intensity (e.g., an increase in the level of intensity going from the first cycle to the last cycle). Further, different types of vibration profiles may be specified such as a sine sweep, random vibration, synthesized shock, etc. The mechanical shaker 101 may be a standalone unit that may be retrofitted or added to the sump pump 102. In some embodiments, the mechanical shaker 101 may be integrated with or be part of the sump pump 102. Further, both the mechanical shaker 101 and the water level sensor(s) in the system 100 may be connected to the controller 138 so that the controller 138 can control the operation of the mechanical shaker 101 and the water level sensor(s).

The mechanical shaker 101 may be automatically activated in response to detected soft mechanical failures, such as when water overflow is detected by water level sensor or when the motor 103 runs too long in the absence of any water overflow detection. The mechanical shaker 101 may also be automatically activated in response to the controller 138 detecting potential problems with the motor 103. For example, the controller 138 may detect a vibration or acceleration pattern (e.g., of the water or of the sump pump or sump pipe) indicative of a problem (e.g., a blockage), and may respond by activating the shaker 101.

In some examples, the sump pump controller 138 maintains, tests, etc. the sump pump system 100 by periodically (e.g., every 14 days) running the motor 103 for at least a short duration (e.g., 30 seconds), regardless of the amount of water in the sump basin 104.

To reduce, avoid, prevent, etc. corrosion of the impeller 117 due to extended exposure of the impeller 117 to standing, potentially dirty water, in some examples, the sump pump controller 138 periodically activates the motor 103 (e.g., every 14 days) until the level of water in the sump basin 104 as detected by, for example, the sensor 134 is below the bottom 137 of the impeller 117. When the sensor 134 is a level sensor, the level of water in the sump basin 104 may be detected as being below the impeller 117 when the sensor 134 fails to sense any water. When the sensor 134 is a force sensor, the level of water in the sump basin 104 may be detected as above the bottom 137 of the impeller 117 when the sensor 134 senses a falling water level, water movement (e.g., sloshing, splashing, ripples, etc.) due to pump vibrations, etc.

Additionally and/or alternatively, following a water event, the sump pump controller 138 runs the motor 103 until a current level of the water in the sump basin 104 as detected by, for example, the sensor 134 is below the bottom 137 of the impeller 117 and/or another sump pump component. Example water events include, but are not limited to, a storm, a flood, a plumbing failure, etc. that initially causes an initial inrush of incoming water, followed by a slower flow of incoming water. An example method of detecting a water event includes: (i) during a first time period, detecting that a rate at which water is rising in the sump basin exceeds a first threshold; (ii) during a second, later time period, detecting that a rate at which water is rising in the sump basin 104 is less than a second, lower threshold; and (iii) optionally detecting that water has stopped rising in the sump basin. In some examples, the force sensor 126 is configured to determine the water rise rate in the sump basin 104. The rate at which water is rising in the sump basin 104 may, additionally and/or alternatively, be determined by counting the number of activations of the motor 103 in a period of time to, for example, maintain a current level of water in the sump basin 104 below the water level or mark 142.

As shown in the illustrated example of FIG. 1 , the sump pump controller 138 and/or, more generally, the sump pump system 100, may be a smart device that is part of the sump pump network system 160. However, the sump pump controller 138 and/or, more generally, the sump pump system 100 may, additionally and/or alternatively, operate as a standalone system.

The sump pump controller 138 may convey data, updates, alerts, etc. related to the sump pump system 100 to a smart home hub 152 at the property 150 via any number and/or type(s) of local network(s) 154. The smart home hub 152 may connect to smart home devices (e.g., the sump pump controller 138, the sump pump system 100, doorbells, lights, locks, security cameras, thermostats, etc.) to enable a user 156 (e.g., a homeowner) to install, configure, control, monitor, etc. such devices via an electronic device 158, such as a smartphone, a tablet, a personal computer, or any other computing device. In some embodiments, the smart home hub 152 may send alerts, updates, notifications, etc. when certain conditions occur (e.g., when the sump pump controller 138 detects potential failure conditions) to the user 156 via their electronic device 158. Additionally and/or alternatively, alerts, status updates, notifications, etc. may be provided remotely via any number and/or type(s) of remote network(s) 162, such as the Internet. Thus, the user 156 may receive alerts, status updates, notifications, etc. via their electronic device 158 both when they are at the property 150 and when they are away. Moreover, alerts, status updates, notifications, etc. may be sent to a remote processing server 164 (e.g., a server or servers associated with insurance provider or providers) via the remote network(s) 162 for remote monitoring, control, etc.

While examples disclosed herein are described with reference to the sump pump controller 138 receiving and processing data from the sensors 124, 126, 128, 130, 132 and 134 to maintain and/or detect failures of the sump pump system 100, additionally and/or alternatively, data from the sensors 124, 126, 128, 130, 132 and 134 may be sent to the remote processing server 164 for processing to control, maintain and/or detect failures of the sump pump system 100, etc. In some examples, the remote processing server 164 may be part of security system monitoring server.

In some examples, data from the sensors 124, 126, 128, 130, 132 and 134, and/or alerts, status updates, notifications, trends, etc. determined by the sump pump controller 138 are stored in a cache, datastore, memory, etc. 140 for subsequent recall.

While the example sump pump controller 138 and/or, more generally, the example sump pump system 100 for monitoring sump pumps for failures and/or maintaining sump pumps are illustrated in FIG. 1 , one or more of the elements, processes, devices and/or systems illustrated in FIG. 1 may be combined, divided, re-arranged, omitted, eliminated or implemented in any other way. Further, the sump pump controller 138 and/or, more generally, the sump pump system 100 may include one or more elements, processes, devices and/or systems in addition to, or instead of, those illustrated in FIG. 1 , and/or may include more than one of any or all of the illustrated elements, processes, devices and/or systems.

FIG. 2 is a block diagram of an example computing system 200 configured in accordance with described embodiments. The example computing system 200 may be used to, for example, implement all or part of the sump pump controller 138 and/or, more generally, the sump pump system 100. The computing system 200 may be, for example, a computer, an embedded controller, an Internet appliance, and/or any other type of computing device. Any one or more of the server 164, the hub 152, the device 158, or the controller 138 may be similar to the system 200, and may have components identical to or similar to those of the system 200.

The computing system 200 includes, among other things, a processor 202, memory 204, input/output (I/O) interface(s) 206 and network interface(s) 208, all of which are interconnected via an address/data bus 210. The program memory 204 may store software and/or machine-readable instructions that may be executed by the processor 202. It should be appreciated that although FIG. 2 depicts only one processor 202, the computing system 200 may include multiple processors 202. The processor 202 of the illustrated example is hardware, and may be a semiconductor based (e.g., silicon based) device. Example processors 202 include a programmable processor, a programmable controller, a graphics processing unit (GPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), a field programmable logic device (FPLD), etc. In this example, the processor implements sump pump controller 138.

The memory 204 may include volatile and/or non-volatile memory(-ies) or disk(s) storing software and/or machine-readable instructions. For example, the program memory 204 may store software and/or machine-readable instructions that may be executed by the processor 202 to implement the sump pump controller 138 and/or, more generally, the sump pump system 100. In some examples, the memory 204 is used to store the datastore 140.

Example memories 204 include any number or type(s) of volatile or non-volatile tangible, non-transitory, machine-readable storage medium or disks, such as semiconductor memory, magnetically readable memory, optically readable memory, a hard disk drive (HDD), an optical storage drive, a solid-state storage device, a solid-state drive (SSD), a read-only memory (ROM), a random-access memory (RAM), a compact disc (CD), a CD-ROM, a DVD, a Blu-ray disk, a redundant array of independent disks (RAID) system, a cache, a flash memory, or any other storage medium or storage disk in which information may be stored for any duration (e.g., permanently, for an extended time period, for a brief instance, for temporarily buffering, for caching of the information, etc.).

As used herein, the term non-transitory, machine-readable medium is expressly defined to include any type of machine-readable storage device and/or storage disk, to exclude propagating signals, and to exclude transmission media.

The processing platform 200 of FIG. 2 includes one or more communication interfaces such as, for example, one or more of the input/output (I/O) interface(s) 206 and/or the network interface(s) 208. The communication interface(s) enable the processing platform 200 of FIG. 2 to communicate with, for example, another device, system, host system, or any other machine such as the smart home hub 152 and/or the remote processing server 164.

The I/O interface(s) 206 of FIG. 2 enable receipt of user input and communication of output data to, for example, the user 156. The I/O interfaces 206 may include any number and/or type(s) of different types of I/O circuits or components that enable the processor 202 to communicate with peripheral I/O devices (e.g., the example sensors 124, 126, 128, 130, 132 and 134 of FIG. 1 ) or another system. Example I/O interfaces 206 include a universal serial bus (USB) interface, a Bluetooth® interface, a near field communication (NFC) interface, a serial interface, and/or an infrared transceiver. The peripheral I/O devices may be any desired type of I/O device such as a keyboard, a display (a liquid crystal display (LCD), a cathode ray tube (CRT) display, a light emitting diode (LED) display, an organic light emitting diode (OLED) display, an in-place switching (IPS) display, a touch screen, etc.), a navigation device (e.g., a mouse, a trackball, a capacitive touch pad, a joystick, etc.), a speaker, a microphone, a printer, a button, etc. Although FIG. 2 depicts the I/O interface(s) 206 as a single block, the I/O interface(s) 206 may include any number and/or type(s) of I/O circuits or components that enable the processor 202 to communicate with peripheral I/O devices and/or other systems.

The network interface(s) 208 enable communication with other systems (e.g., the smart home hub 152 of FIG. 1 ) via, for example, one or more networks (e.g., the networks 154 and 162). The example network interface(s) 208 include any suitable type of wired and/or wireless network interface(s) configured to operate in accordance with any suitable protocol(s) like, for example, a TCP/IP interface, a Wi-Fi™ transceiver (according to the IEEE 802.11 family of standards), an Ethernet transceiver, a cellular network radio, a satellite network radio, a coaxial cable modem, a digital subscriber line (DSL) modem, a dialup modem, or any other suitable communication protocols or standards. Although FIG. 2 depicts the network interface(s) 208 as a single block, the network interface(s) 208 may include any number and/or type(s) of network interfaces that enable the processor 202 to communicate with other systems and/or networks.

To provide, for example, backup power for the example sump pump controller 138 and/or, more generally, the example sump pump system 100, the example computing system 200 may include any number and/or type(s) of battery(-ies) 212.

To determine the time between events, the example computing system 200 includes any number and/or type(s) of timer(s) 214. For example, a timer 214 may be used to periodically trigger (e.g., every 14 days) the activation of the motor 103 for maintenance purposes. A timer 214 may, additionally and/or alternatively, be used to determine the rate at which water is rising in the sump basin (e.g., number of activations of the motor 103 required) during a period of time.

FIG. 3 is a flowchart 300 representative of example hardware logic, machine-readable instructions, hardware implemented state machines, and/or any combination thereof for implementing the sump pump controller 138 and/or, more generally, the sump pump system 100 of FIG. 1 . The machine-readable instructions may be an executable program or portion of an executable program for execution by a computer processor such as the processor 202 shown in the example processor platform 200 discussed in connection with FIG. 2 . The program may be embodied in software stored on a tangible, non-transitory, machine-readable storage medium such as a CD, a CD-ROM, a floppy disk, a HDD, a DVD, a Blu-ray disk, or a memory associated with the processor 202, but the entire program and/or parts thereof could alternatively be executed by a device other than the processor 202 and/or embodied in firmware or dedicated hardware. Further, although the example program is described with reference to the flowchart 300 illustrated in FIG. 3 , many other methods of implementing the sump pump controller 138 and/or, more generally, the sump pump system 100 of FIG. 1 may alternatively be used. For example, the order of execution of the blocks may be changed, and/or some of the blocks described may be changed, eliminated, or combined. Additionally, and/or alternatively, any or all of the blocks may be implemented by one or more hardware circuits (e.g., discrete and/or integrated analog and/or digital circuitry, an FPGA, an ASIC, a PLD, an FPLD, a comparator, an operational-amplifier (op-amp), a logic circuit, etc.) structured to perform the corresponding operation without executing software or firmware.

The example flowchart 300 begins with the sump pump controller 138 of FIG. 1 (e.g., the processor 202 of FIG. 2 ) waiting until a time since a last activation of the sump pump 102 exceeds a threshold (e.g., representing 14 days) (block 302). The time may be determined, for example, using the example timer 214 of FIG. 2 . In some examples, the sump pump controller 138 also determines whether a current water level is below a low-water mark at which the sump pump 102 deactivates. When the time since the last activation exceeds the threshold and, optionally, the current water level is below the low-water mark (block 302), the sump pump controller 138 activates the motor 103 (block 304). When the current level of water in the sump basin 104 (e.g., as measured by the sensor 134) is below the bottom 137 of the impeller and water movement (e.g., sloshing) is not detected (e.g., by the sensor 134) (block 306), the sump pump controller 138 deactivates the sump pump 102 (block 308), and control returns to block 302 to wait until the next periodic interval.

Returning to block 306, when the current level of water in the sump basin 104 (e.g., as measured by the sensor 134 or 126) is above the bottom 137 of the impeller or water movement is detected (e.g., by the sensor 134) (block 306), the sump pump controller 138 checks whether a timeout has occurred (block 310). A timeout (e.g., of the timer 214) may occur when the current amount of run time exceeds a threshold (e.g., the amount of run time normally needed to reduce the amount of water in the sump basin 104 from the low or initial level or mark 140 to the level or mark 136). When a timeout occurs (block 310), the sump pump controller 138 may, for example, send an alert, notification to the user 156 via their electronic device 158 that maintenance of the sump pump system 100 may be required (block 312), and deactivates the sump pump 102 (block 308). In some embodiments, the alert may be a trigger to order replacement sump pump system components and their necessary fixtures. The trigger may be, for example, a push notification to the user device linked to the user's (e.g., the user 156) account with an online retailer of the user's choice. The notification may be an alert requiring the user's approval to complete the order. Otherwise, control returns to block 306 to check the current level of water in the sump basin 104.

In some embodiments, the controller 138 may analyze motor control characteristics such as current draw and pump motor 103 rotation speed. Based on the analysis, the controller 138 may determine whether the pump 102 is pumping water or air. The controller 138 can utilize the dry/submerged status of the pump 102 to calculate a fill rate and/or a level of water (e.g., without directly sensing a water level via a level sensor).

For example, the controller 138 may calculate (or be configured to store) a high-water volume (i.e., the volume of water in the basin when the water reaches the high-water mark). Similarly, the controller 138 may calculate (or be configured to store) a dry-pump volume (i.e., the volume of water in the basin when the water drops low enough to result in the pump 102 pumping air rather than water). The difference between the high-water volume and the dry-pump volume may be referred to as the delta volume (the controller 138 may be configured to store the delta volume, or it may be configured to calculate the delta volume). For example, the delta volume may be 2.5 gallons. The controller 138 may detect when the high-water volume exists (because the time at which the pump 102 is activated is likely the same time at which the high-water volume is achieved). Further, using the described techniques, the controller 138 may detect a moment at which an active pump or impeller starts pumping air instead of water. The controller 138 may calculate the time (e.g., 30 seconds or ½ minute) between these two moments and may divide the known delta volume (e.g., 2.5 gallons) by the calculated time (½ minute) to arrive at a fill rate (e.g., 5 gallons per minute).

Further, the controller 138 may utilize the calculated fill rate to estimate the level in the basin. For example, the controller 138 may start a timer when the water level reaches a known sensed level. For example, the low-water mark may be a known height. After a level sensor detects the low-water mark (e.g., the mark at which the pump 102 typically stops pumping), it may start the timer to track a time and may multiply the time by the fill rate to estimate the level at the time. This may be done multiple times if desired (e.g., continuously). Likewise, the controller 138 may be configured to store a known height just below the pump or impeller (i.e., the “dry-pump mark”). The controller 138 may utilize the disclosed techniques to detect (e.g. via motor control characteristics or power/current draw) a moment at which the pump starts to dry pump. The controller 138 may then assume the water level is at the dry-pump mark, and may utilize a timer and the fill rate to calculate or track an estimated water level (e.g., continuously if desired). The estimated water level may be used as a secondary or back-up level tracking (e.g., in case the primary level sensor faults). In other words, if an estimated water level indicates the water is above the high-water mark and a primary level sensor has not detected water at the high-water mark, the controller 138 may nevertheless activate the pump 102 to prevent flooding. If desired, the controller 138 may generate an alarm to notify someone (e.g., a user 156 or a home insuring party) that the level sensor may be faulty.

FIG. 4 is a flowchart 400 representative of example hardware logic, machine-readable instructions, hardware implemented state machines, and/or any combination thereof for implementing the sump pump controller 138 and/or, more generally, the sump pump system 100 of FIG. 1 . The machine-readable instructions may be an executable program or portion of an executable program for execution by a computer processor such as the processor 202 shown in the example processor platform 200 discussed in connection with FIG. 2 . The program may be embodied in software stored on a tangible, non-transitory, machine-readable storage medium such as a CD, a CD-ROM, a floppy disk, a HDD, a DVD, a Blu-ray disk, or a memory associated with the processor 202, but the entire program and/or parts thereof could alternatively be executed by a device other than the processor 202 and/or embodied in firmware or dedicated hardware. Further, although the example program is described with reference to the flowchart 400 illustrated in FIG. 4 , many other methods of implementing the sump pump controller 138 and/or, more generally, the sump pump system 100 of FIG. 1 may alternatively be used. For example, the order of execution of the blocks may be changed, and/or some of the blocks described may be changed, eliminated, or combined. Additionally, and/or alternatively, any or all of the blocks may be implemented by one or more hardware circuits (e.g., discrete and/or integrated analog and/or digital circuitry, an FPGA, an ASIC, a PLD, an FPLD, a comparator, an operational-amplifier (op-amp), a logic circuit, etc.) structured to perform the corresponding operation without executing software or firmware.

The example flowchart 400 begins with the sump pump controller 138 of FIG. 1 (e.g., the processor 202 of FIG. 2 ) waiting until a water event has occurred (block 402). When a water event has ended (block 402), the sump pump controller 138 activates the motor 103 (block 404). When the current level of water in the sump basin 104 (e.g., as measured by the sensor 134) is below the bottom 137 of the impeller and water movement (e.g., sloshing) is not detected (e.g., by the sensor 134) (block 406), the sump pump controller 138 deactivates the sump pump 102 (block 408), and control returns to block 402 to wait until the next water event.

Returning to block 406, when the current level of water in the sump basin 104 (e.g., as measured by the sensor 134) is above the bottom 137 of the impeller or water movement is detected (e.g., by the sensor 134) (block 406), the sump pump controller 138 checks whether a timeout has occurred (block 410). A timeout (e.g., of the timer 214) may occur when the current amount of run time exceeds a threshold (e.g., the amount of run time normally needed to reduce the amount of water in the sump basin 204 from the low or initial level or mark 140 to the level or mark 136). When a timeout occurs (block 410), the sump pump controller 138 may, for example, send an alert, notification to the user 156 via their electronic device 158 that maintenance of the sump pump system 100 may be required (block 412), and deactivates the sump pump 102 (block 408). Otherwise, control returns to block 406 to check the current level of water in the sump basin 104.

Use of “a” or “an” are employed to describe elements and components of the embodiments herein. This is done merely for convenience and to give a general sense of the description. This description, and the claims that follow, should be read to include one or at least one and the singular also includes the plural unless it is obvious that it is meant otherwise. A device or structure that is “configured” in a certain way is configured in at least that way, but may also be configured in ways that are not listed.

Further, as used herein, the expressions “in communication,” “coupled” and “connected,” including variations thereof, encompasses direct communication and/or indirect communication through one or more intermediary components, and does not require direct mechanical or physical (e.g., wired) communication and/or constant communication, but rather additionally includes selective communication at periodic intervals, scheduled intervals, aperiodic intervals, and/or one-time events. The embodiments are not limited in this context.

Further still, unless expressly stated to the contrary, “or” refers to an inclusive or and not to an exclusive or. For example, “A, B or C” refers to any combination or subset of A, B, C such as (1) A alone, (2) B alone, (3) C alone, (4) A with B, (5) A with C, (6) B with C, and (7) A with B and with C. As used herein, the phrase “at least one of A and B” is intended to refer to any combination or subset of A and B such as (1) at least one A, (2) at least one B, and (3) at least one A and at least one B. Similarly, the phrase “at least one of A or B” is intended to refer to any combination or subset of A and B such as (1) at least one A, (2) at least one B, and (3) at least one A and at least one B.

Moreover, in the foregoing specification, specific embodiments have been described. However, one of ordinary skill in the art appreciates that various modifications and changes can be made in view of aspects of this disclosure without departing from the scope of the invention as set forth in the claims below. Accordingly, the specification and figures are to be regarded in an illustrative rather than a restrictive sense, and all such modifications made in view of aspects of this disclosure are intended to be included within the scope of present teachings.

Additionally, the benefits, advantages, solutions to problems, and any element(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential features or elements of any or all the claims.

Furthermore, although certain example methods, apparatus and articles of manufacture have been disclosed herein, the scope of coverage of this patent is not limited thereto. On the contrary, this patent covers all methods, apparatus and articles of manufacture fairly falling within the scope of the claims of this patent.

Finally, any references, including, but not limited to, publications, patent applications, and patents cited herein are hereby incorporated in their entirety by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.

The patent claims at the end of this patent application are not intended to be construed under 35 U.S.C. § 112(f) unless traditional means-plus-function language is expressly recited, such as “means for” or “step for” language being explicitly recited in the claim(s). The systems and methods described herein are directed to an improvement to computer functionality, and improve the functioning of conventional computers.

Although certain example methods, apparatus and articles of manufacture have been disclosed herein, the scope of coverage of this patent is not limited thereto. On the contrary, this patent covers all methods, apparatus and articles of manufacture fairly falling within the scope of the claims of this patent. 

What is claimed is:
 1. A computer-implemented method for maintaining a sump pump by reducing exposure of an impeller of the sump pump to standing water in a sump basin, the method comprising: activating a sump pump; deactivating the sump pump when a first current water level in a sump basin in which the sump pump is disposed reaches a first low-water mark; detecting a water event at the sump basin; activating, by one or more processors, the sump pump and reducing a water level in the sump basin to a level below an impeller, determining, by one or more processors, a second current water level in the sump basin, including sensing the water level with a sensor, and deactivating, by one or more processors, the sump pump when the second current water level in the sump basin is below a second low-water mark, the second low-water mark is below the first low-water mark.
 2. The computer-implemented method of claim 1, further comprising providing an alert when the second current water level in the sump basin is not falling in response to activating the sump pump.
 3. The computer-implemented method of claim 1, wherein determining the second current water level includes sensing the second current water level with a sensor positioned at least one of: (1) at the sump basin; or (2) below the first low-water mark.
 4. The computer-implemented method of claim 3, wherein the sensor comprises a water level sensor.
 5. The computer-implemented method of claim 3, wherein the sensor comprises at least one of a force sensor or accelerometer.
 6. The computer-implemented method of claim 1, wherein determining that the second current water level in the sump basin is below the second low-water mark includes detecting whether water in the sump basin is moving.
 7. The computer-implemented method of claim 1, wherein determining the water event includes determining a number of sump pump activations in a period of time exceeding a threshold.
 8. A non-transitory, computer-readable storage medium storing computer-readable instructions that, when executed by one or more processors of a sump pump system, cause the sump pump system to: activate a sump pump; deactivate the sump pump when a first current water level in a sump basin in which the sump pump is disposed reaches a first low-water mark; detect a water event at the sump basin; activate the sump pump and reduce a water level in the sump basin to a level below an impeller, detect, with a sensor, a second current water level in the sump basin, including sensing the water level with a sensor, and deactivate the sump pump when the second current water level in the sump basin is below a second low-water mark, the second low-water mark is below the first low-water mark.
 9. The non-transitory, computer-readable storage medium of claim 8, wherein the sensor is positioned below the first low-water mark.
 10. The non-transitory, computer-readable storage medium of claim 8, wherein the computer-readable instructions, when executed by one or more processors of the sump pump system, cause the sump pump system to determine that the second current water level in the sump basin is below the second low-water mark by detecting whether water in the sump basin is moving.
 11. The non-transitory, computer-readable storage medium of claim 8, wherein the computer-readable instructions, when executed by one or more processors of the sump pump system, further comprise providing an alert when the second current water level in the sump basin is not falling in response to activating the sump pump.
 12. The non-transitory, computer-readable storage medium of claim 8, wherein the sensor comprises a force sensor.
 13. The non-transitory, computer-readable storage medium of claim 8, wherein the sensor comprises an accelerometer.
 14. A computer-implemented method for maintaining a sump pump, the method comprising: determining, by one or more processors, a water event; and activating, by one or more processors, the sump pump to reduce exposure of an impeller of the sump pump to standing water in the sump basin, detecting, with a sensor, a current water level in a sump basin in which the sump pump is disposed, wherein the sensor is configured to detect at least one of acceleration or force, and deactivating, by one or more processors, the sump pump, wherein the level corresponding to the bottom of the impeller is a second low-water mark below a first low-water mark at which the sump pump is configured to be initially deactivated.
 15. A computer-implemented method of claim 14, wherein determining the water event includes determining a number of sump pump activations in a period of time exceeding a threshold.
 16. A computer-implemented method of claim 14, wherein determining the water event includes: determining, during a first time period, a first number of sump pump activations in a first period of time exceeding a first threshold; and determining, during a second time period, a second number of sump pump activations in a second subsequent period of time below a second, lower threshold.
 17. A computer-implemented method of claim 14, wherein determining the water event includes: during a first time period, determining that a rate at which water is rising in the sump basin exceeds a first threshold; and during a second, later time period, determining that a rate at which water is rising in the sump basin is less than a second, lower threshold.
 18. The computer-implemented method of claim 14, wherein determining the water event further includes determining that water has stopped rising in the sump basin.
 19. The computer-implemented method of claim 14, wherein the sensor is positioned below the level corresponding to the bottom of the impeller.
 20. The computer-implemented method of claim 14, wherein the sensor comprises an accelerometer, a piezoelectric crystal, or a pneumatic, a hydraulic, an inductive, a capacitive, a magnetostrictive, or a strain gage load cell. 